namespace std has no member cout

world{intmain// 程序的执行从哪里开始// main函数usingnamespacestd

*/ #include iostream> using namespace std;int main(){cout "

include using namespace std; int main() { int n,i,a[100]= {1,1

*/ #include iostream> using namespace std;int main(){cout "

>usingnamespacestd;intmain(){intn,i;cin>>n;if(n 2){cout "no"

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